TRAVEL, SCIENCE, MUSINGS Posts

These are my blog posts spanning my interests in travel, science, and musings about miscellaneous topics.

Christmas and New Years in Florence
Why you should spend Christmas and New Years in Florence Italy
Are you tired of the commercialized Christmas season in the USA? Do you get worn out from the frenetic shopping and spending and the scurrying through jostling crowds of crass consumers? If yes, then you...
I Portoni della Bra, Verona, Italy
12 great things to do in Verona, Italy
(The items I list here are from my special list of the best things to do in Verona.  But in all honesty this is only a partial list. For the sake of brevity I forced myself to restrict the list to just...
view from our balcony of rooftops in Perugia, Italy
12 Great things to do in Perugia Italy
Perugia is a charming city, tucked away on the slopes of gentle Umbrian hills. It has a nice, large historic center ringed by more modern development. But in the city center you will find more than 2500...
the moon
How to calculate the radius of the moon
This post will show a way to calculate the diameter and radius of the moon. These can be determined from the angular width of the Moon viewed from the Earth and using simple trigonometry. The...
diameter and radius of the planets
How to calculate the radii of the planets
This post will show a way to calculate the diameters and radii of the planets. These values can be determined when the planet is aligned with the Sun and the Earth. Then, knowing the time period of the...
radius of the sun
How to calculate the radius of the sun
This post will show a way to calculate the diameter and radius of the sun. These values can be determined from the angular width of the Sun viewed from the Earth and using simple trigonometry. The...
post about computing the mass of the sun
How to calculate the mass of the sun
This post will show a way to calculate the approximate mass of the sun. The value can be determined from knowing the time period of the Earth’s orbit around the Sun and assuming the Earth’s orbit is circular...
distances between the sun and planets
How to calculate the distances between the sun and planets
This post will show a way to calculate the approximate distances between the sun and planets. This method requires the following steps:Step 1: Use Kepler’s third law to determine the approximate distance...
distance between the earth and the moon
How to calculate the distance between the earth and the moon
This post will show a way to calculate the approximate distance between the earth and the moon. This value can be determined from knowing the time period of the Moon’s orbit around the Earth and assuming...
mass of earth
How to calculate the mass of the earth
This post shows a way to calculate the approximate mass of the earth. The computation uses Isaac Newton’s second law and his equation for the gravitational force, both published in his book “Principia”...
Siena and Asciano and the Crete Senesi region in Tuscany
Walking the Montalceto path near Siena Italy
Walking the Montalceto path is a delight because you get to see the lush, verdant fields in Tuscany. I recommend starting with a stay in Siena. Siena is a wonderful place to visit for many reasons including...
radius of the earth
How to calculate the radius of the earth
This post shows an approximate way to calculate the radius of the earth as well as the circumference of the earth. This post uses the method of Eratosthenes. Eratosthenes (born 276 BC, died 194 BC)...
cyclic Big Bang
Cyclic Big Bang (and multiple universes)
This post speculates on an eternally cyclic Big Bang arising from merging black holes that ultimately become unstable. It also speculates on the possibility of multiple universes. Black holes and eternally...